The i2o_scsi OSM module is a SCSI HBA driver that supports the SCSA interface.
It supports both SCSI Adapter Class and SCSI Peripheral Class functions. It translates the SCSI
packet coming down from the SCSA into an I2O SCSI Peripheral
Class message, passes it along to the IOP which in turn
passes it to the HDM (hardware specific module).
It also uses SCSI Adapter Class functions to manage
the SCSI adapter and SCSI bus. For
each SCSI Adapter Class I2O device (a SCSI
controller), it claims the SCSI Peripheral class devices
which are attached to that port. The existing SCSI target
drivers which use the SCSA interface should only work with i2o_scsi. This includes target drivers like sd, st and so on.
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